Dumping-wagon.



110. 843,284. PATENTED FEB. 5, 1907.

H. P. LANGRBDER.

DUMPING WAGON.

APPLICATION nun NOV.1,1906.

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TINTTED STATES PATENT CFFICE.

DUMPlNG-WAGON.

Specification of Letters Patent.

Patented Feb. 5, 1907.

Application filed November 1,1906. Serial N0. 341,567.

To all 1071,0122, it may concern/.-

Be it known that I, HENRY F. LANGREDER,

a citizen of the United States, residing at hicago, in the county ofCook and State of Illinois, have invented a new and useful Improvementin Dumping-Wagons, of which the following is a specification.

My invention relates to improvements in dumping-wagons, and is fullydescribed and explained in this specification, and shown in theaccompanying drawings, in which Figure 1 is a top plan of my improveddumping-wagon, the rear portion of the bottom being broken away toshowthe arrangement of parts beneath it. Fig. 2 is a front elevation ofthe wagon-body, and Fig. 3 is a transverse section on line 3 3 of Fig.1.

Referring to the drawings, A A are the four transverse bars which formthe framework of an ordinary wagon-bed, and secured to and supported bythese transverse bars are sides 15 B of ordinary construction. To eachof the transverse bars I secure a casting C, each casting having acurved side-portion c, antifriction-rollers c, and a centralperforation, a rotatable shaft D being passed through and journaled inthe four perforations in the four castings. Above the castings C andsupported thereby are two curved sheet-metal plates E, hinged asillustrated. These curved plates rest upon the curved surfaces of thecastings C and conform thereto, and also bear upon theantifriction-rollers 0 carried by said castings. The outer edges of thehinged plates E are engaged by hooks f connected to chains F, the saidchains being arranged in pairs and secured to the shaft D, preferably atdiametrically opposite points.

The shaft D is provided at its forward end with a gear G in mesh with aworm h on a shaft H, said shaft being provided with a handle it.

In the operation of my improved wagon the body is filled with inaterialin the ordinary way, the material resting upon and being supported bythe curved hinged plates E. When it is desired to dump the wagon, thehandle h is rotated, thus winding up the chains F on the shaft D anddrawing to I gether the outer edges of the hinged plates. This actionnecessarily raises the hinge connecting the two plates, increasing thepitch of said plates and causing the material in the wagon to flow outover the sides of the plates. This movement of the material lightens theload and makes it continuously easier to raise the plates until at theclose of the operation the wagon is entirely empty.

I am aware that it has heretofore been proposed to construct a wagonhaving plates hinged together along the center of the wagon-box and toraise the pivotal points of the plates to dump the wagon; but suchwagons have been constructed with flat plates instead of with curvedplates having their concave faces inward. Dumping-wagons with flatplates have heretofore been made in two fornist. (2., with the plateshorizontal in their normal or closed position and with the platesslanting upward toward the center of the wagon when in their normal orclosed position. When the plates lie horizontal, the amount of upwardmovement of the pivotal line necessary to afford a dumping-space betweenthe outer edges of the plates and the walls of the wagon-body is sogreat as to make it a matter of the greatest difficulty to dump such adevice at all, for during the raising of the pivotal point between theplates practically the entire contents of the wagon must be bodilyraised for a considerable distance. This difficulty has given rise tothe second form of construction, above mentioned, where the platesnormally slant upward. Obviously a much slighter raise of the plateswill be necessary in such a construction to afford a suitabledumpingspace; but when flat plates are given sufficient upwardinclination toward the center of the wagon to make it possible to form alarge dumping-space without undue movement of the pivotal point betweenthe two plates the cubic contents of the wagon is very materiallydecreased.

In my wagon I form the plates, as illustrated in the drawi1rgs,with acurved cross-section, the concave faces of the plates being inward, andby this means I am enabled, without materially decreasing the cubiccontents of the wagon, to raise the pivotal point between the two platesto a sufiicient distance to make the initial movement of the platesproduce a large dumping-space at the sides. Furthermore, by using thiscurved construction it is possible to raise the hinge between the platesto a considerable extent with a very small proportionate bodily raisingof the load in the wagon. the hinged connection between the plates in mywagon produces less bodily raising of the load than is produced in thesame movement In fact, a given absolute rise in in either of the otherconstructions referred to and at the ear e time produces as great a eaccompan ing dranis I have shown the to of construction or my wagonwhich I now prefer;.but it will be obvious that the form be varied to avery large extent, while still preserving the "'nciple of operationcharacterizing my construction.

hat I claim as new, and desire to secure by Letters Patent, is I 1. Thecombination with the sides of a wagon-box, of twolongitudinally-extending bottom plates curved in cross-section withtheir concave faces inward, and means for moving said plates to drawtheir outer edges from the sides of the boxand to raise the edgesthereof adjacent to the center of the structure.

2. The combination with the sides of a wagon-box, of twolongitudinally-extending bottom plates hinged together along the medialline of the box, said plates being curved in cross-section and havingtheir concave faces inward, and means for raising the adjacent edges ofthe plates and drawing the outer edges thereof away from the sides ofthe box.

3. The combination with the sides of a wagon-box, of twolongitudinally-extending bottom plates curved in cross-section withtheir concave faces inward, the outer edges of said plates beingsubstantially at the level of the bottom of the box and the inner edgesof the plates being at a higher level than the bottom of the box, andmeans for moving said plates to draw the outer edges thereof away fromthe sides of the box and to raise their inner edges.

4. The combination with the walls of a wagon-box, of twolongitudinally-extending bottom plates curved in cross-section withtheir concavefaces inward, said plates being hinged together along themedian line of the structure and having their outer portions adjacent tothe lower level of the box and their adjacent edges at a higher level,and means for moving said plates to raise their adjacent edges and drawtheir outer edges inward.

5. The combination with the sides of a wagon-box, of twolongitudinally-extending bottom plates curved in cross-section withtheir concave faces inward, castings beneath the plates and conformingto the curves thereof to support the same, and means for raising theadjacent edges of the plates and drawin the outer sides thereof awayfrom the sides of the box.

6. The combination with the sides of a wagon-box, of twolongitudinally-extending bottom plates curved in cross-section withtheir concave faces inward, castings beneath the plates and conformingto the curves thereof to support the same, means for raising theadjacent edges of the plates and drawing the outer sides thereof awayfrom the sides of the box, and suitable antifrictionrollers on thecastings adapted to engage the plates.

7. The combination with the sides of a wagon-box, of twolongitudinally-extending bottom plates curved in cross-section withtheir concave faces inward, a shaft extending longitudinally of the box,means of connection between the shaft and the plates whereby rotation ofthe shaft will draw the edges of the plates together, anoperating-handle, and means of connection including a worm and gearinterposed between the handle and the shaft for rotating the shaft asthe handle is moved.

J. H. LANDER. C. W. WAsHBURNE.

